When we bought our house we were advised by the surveyor that there was damp in the kitchen. The surveyor said it wasn't serious but said he wasn't an expert so we needed to get quotes for the work. Apparrently it was just against an external wall that joins to nexts doors garden(their house is raised with their garden coming 1/4 way up our house). However when we got quotes we were left further confused with a couple wanting to damp proof the whole kitchen whilst others were wanting to do just one wall.

We've now ripped out the kitchen and found black mould in the corner where one of the units has been. We don't have any other patches across this wall and have a large radiator on it. We have the window open all day everyday. Is this damp or condensation? Can we paint over it with anti mould paint or are we just masking a problem and making things worse in the long term?

anything against your exterior wall will create damp patches
from your post mould is only in one patch remember its summer now and winters on its way the problem will only worsen with time.
Damp proof the whole kitchen,this will give you piece of mind.
If you only damp proof 1 wall and you get damp you will have to remove you newly fitted kitchen and cost you more in the long run.

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